Vertical 4-panel grid split, showcasing four distinct aged leather surfaces. Top panel: finely crafted vegetable-tanned leather with natural pores, subtle grain variation, soft creases, and a warm satin finish. Second panel: heavily handled dark brown leather showing polished contact areas, compressed grain, fingerprints, softened edges, and accumulated natural oils. Third panel: old cracked leather with deep stress fractures, peeling surface layers, dry fibers exposed inside the cracks, and irregular discoloration caused by decades of use. Bottom panel: weather-beaten saddle leather with faded pigment, abrasion marks, dust, water stains, deep wrinkles, and roughened edges. Macro detail photography, soft directional side lighting emphasizing grain depth and natural imperfections, physically accurate leather response, ultra photorealistic., Trigger Words: real_surface